Triflic anhydride mediated synthesis of 3,4-dihydroquinazolines: a three-component one-pot tandem procedure
作者:Christina L. Magyar、Tyler J. Wall、Steven B. Davies、Molly V. Campbell、Haven A. Barna、Sydney R. Smith、Christopher J. Savich、R. Adam Mosey
DOI:10.1039/c9ob01596e
日期:——
A one-potthree-component tandem reaction involving a key Pictet-Spengler-like annulation step has been developed, providing an efficient method for the synthesis of 3,4-dihydroquinazolines in moderate to good yields from amides, aldehydes, and amines. The multicomponent triflic anhydride mediated reaction tolerates the installation of numerous functional groups, affording extensive diversity about
One-Pot Tandem Assembly of Amides, Amines, and Ketones: Synthesis of C4-Quaternary 3,4- and 1,4-Dihydroquinazolines
作者:Molly V. Campbell、Alexei V. Iretskii、R. Adam Mosey
DOI:10.1021/acs.joc.0c01308
日期:2020.9.4
the synthesis of diverse C4-quaternary 3,4-dihydroquinazolines fromamides, amines, and ketones has been developed. The one-pot reaction involves successive triflic anhydride mediated amide dehydration, ketimine addition, and Pictet–Spengler-like cyclization processes and affords products in up to 92% yield. Conversion of 3,4-dihydroquinazolines to the corresponding 1,4-dihydroquinazolines via a two-step
BENZAMIDE DERIVATIVES AND THEIR USE FOR TREATING CNS DISORDERS
申请人:Galley Guido
公开号:US20090036420A1
公开(公告)日:2009-02-05
The present invention relates to methods of treating CNS disorders with a compound of formula I
wherein
X, R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, and R
8
are as defined in the specification and pharmaceutically acceptable acid addition salts thereof.
Phenyl sulfamate derivatives represented by the following formula or salts thereof have a powerful inhibitory effect on steroid sulfatase and are hence useful for the prophylaxis or treatment of diseases associated with steroids such as estrogens, such as breast cancer, corpus uteri cancer, endometrial hyperplasia, infertility, endometriosis, adenomyosis uteri, autoimmune disease, dementia or Alzheimer's disease.
wherein R1 and R2 each independently represent a hydrogen atom or a lower alkyl group; R3 represents a hydrogen atom, a halogen atom, a lower alkyl group, —OSO2NR1R2, a lower alkanoylamino group, a nitro group or a cyano group; and A represents a substituted or unsubstituted phenyl group, a group of the formula —X—NR4R5, or the like.
Phenyl sulfamate derivatives represented by the following formula or salts thereof have a powerful inhibitory effect on steroid sulfatase and are hence useful for the prophylaxis or treatment of diseases associated with steroids such as estrogens, such as breast cancer, corpus uteri cancer, endometrial hyperplasia, infertility, endometriosis, adenomyosis uteri, autoimmune disease, dementia or Alzheimer's disease.
wherein R1 and R2 each independently represent a hydrogen atom or a lower alkyl group; R3 represents a hydrogen atom, a halogen atom, a lower alkyl group, -OSO2NR1R2, a lower alkanoylamino group, a nitro group or a cyano group; and A represents a substituted or unsubstituted phenyl group, a group of the formula -X-NR4R5, or the like.